Sixteen miles of fluted green cliffs up to 1,200m high, cut by hanging valleys and waterfalls, with sea caves you can take a…Sixteen miles of fluted green cliffs up to 1,200m high, cut by hanging valleys and waterfalls, with sea caves you can take a tender into, including the Open Ceiling Cave with a waterfall falling through a hole in its roof. Spinner dolphins in the mornings, monk seals on the beaches. There is no road; the only ways in are boat, kayak or an 11-mile trail. These valleys held Hawaiian settlements for a thousand years, Nualolo Kai has terraces, house sites and heiau still visible. Kalalau was farmed into the 1920s. The fluting comes from erosion of a 5-million-year-old shield volcano, the oldest of the main Hawaiian islands. Anchorage: Summer only (May-Sep), the north shore is unapproachable in winter swell. Permits required for landings at Kalalau and Nualolo Kai. Hazards: Late afternoon light on the cliffs from the water is the shot; whales Dec-Apr but the coast is closed by swell then. More